package action;

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;

public class ActionTest {
    public static void main(String[] args) {
        EventQueue.invokeLater(() -> {
            var frame = new ActionFrame();
            frame.setTitle("ActionTest");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setVisible(true);
         });
    }
}

class ActionFrame extends JFrame {
    private JPanel buttonPanel;
    private static final int DEFAULT_WIDTH = 300;
    private static final int DEFAULT_HEIGHT = 200;

    public ActionFrame() {
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

        buttonPanel = new JPanel();

        var yellowAction = new ColorAction("Yellow", loadIcon("yellow-ball.gif"), Color.YELLOW);
        var blueAction = new ColorAction("Blue", loadIcon("blue-ball.gif"), Color.BLUE);
        var redAction = new ColorAction("Red", loadIcon("red-ball.gif"), Color.RED);

        buttonPanel.add(new JButton(yellowAction));
        buttonPanel.add(new JButton(blueAction));
        buttonPanel.add(new JButton(redAction));

        add(buttonPanel);

        // 关键 快捷键 到 动作的映射
        InputMap inputMap = buttonPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
        inputMap.put(KeyStroke.getKeyStroke("ctrl Y"), "panel.yellow");
        inputMap.put(KeyStroke.getKeyStroke("ctrl B"), "panel.blue");
        inputMap.put(KeyStroke.getKeyStroke("ctrl R"), "panel.red");

        ActionMap actionMap = buttonPanel.getActionMap();
        actionMap.put("panel.yellow", yellowAction);
        actionMap.put("panel.blue", blueAction);
        actionMap.put("panel.red", redAction);
    }

    private Icon loadIcon(String path) {
        return new ImageIcon(ActionFrame.class.getResource(path));
    }

    private class ColorAction extends AbstractAction {
        public ColorAction(String name, Icon icon, Color c) {
            putValue(Action.NAME, name);
            putValue(Action.SMALL_ICON, icon);
            putValue(Action.SHORT_DESCRIPTION, "Set panel color to " + name.toLowerCase());
            putValue("color", c);
        }

        @Override
        public void actionPerformed(ActionEvent event) {
            Color c = (Color) getValue("color");
            buttonPanel.setBackground(c);
        }
    }
}
